[maven-release-plugin] prepare release contentconnector-1.15.1
Added generated changelog mapping
[maven-release-plugin] prepare for next development iteration
Merge branch 'hotfix-1.15' of github.com:gtxcontentconnector/contentconnector into hotfix-1.16

Conflicts:
	contentconnector-apihelper/pom.xml
	contentconnector-changelog/pom.xml
	contentconnector-config-sample/pom.xml
	contentconnector-core/pom.xml
	contentconnector-http/pom.xml
	contentconnector-json/pom.xml
	contentconnector-jtidy/pom.xml
	contentconnector-language/pom.xml
	contentconnector-lucene-autocomplete/pom.xml
	contentconnector-lucene/pom.xml
	contentconnector-poi-transformer/pom.xml
	contentconnector-portlet/pom.xml
	contentconnector-servlet-sample/pom.xml
	contentconnector-servlet/pom.xml
	contentconnector-social-networking/pom.xml
	contentconnector-testutils/pom.xml
	pom.xml